OKW has the feel of space. It was designed to be roomy, whereas the other DVCs were designed to make the best use of space. Therefore you have the stacked washer and dryer in what amounts to a closet, where in the OKW villas you have a full laundry room (in other than the studio).
There is also a full table with an actual dining space, not a half bar and a banquette style table.
All a matter of preference to be sure, but if you are looking for roominess and more places to stash your "stuff" then OKW has the rest beat hands down.